Composition op matter foe



106. COMPOSITIONS,

COATING R PLASTIC.

2 ar iron 11 'm'g' me 100% UNITED STATES PATENT OFFICE.

LEO HALPER, OF CHICAGO, ILLINOIS.

COM-POSITION 0F MATTER FOR MANUFACTURING BUILDING-BRICKS.

1,317,288 Specification of Letters Patent.

No Drawing.

To all whom it may concern:

Be it known that I, LEO PIAnPER, a cit zen of the United States, resldmg at Chicago, in the county of Cook and State of Illinois, have invented certamnew and useful Improvements in Gomposltlon of Matter for Manufacturing Building-Bricks, of which the following is a specification.

This invention relates to a composlt on of matter for use in making building bllCk and has for its primary object the im rovement of plastic mixtures whereby their cost is cheapened, their resistance to crushing forces maximized, and they are very quickly available for use after discharge from the block press, due to their quick drylng character.

My improved composition consists of a mixture of sand, crushed stone, cinders, iron, cement, and water.

In preparin the composltlon I refer to use the ingre ient's in about the ollowm proportionsviz., 10% of sand 10% 0 crushed stone 5% of cindefl of anu- 0% of c ment these com US- of dry mgraients to w ich is addedsuificient water to make what is commonly known in the building art as a hea mixture, that is, a mixture which is not s oppy and which does not readily flow. In manufacturing bricks from this mixture I prefer to use clean, sharp, washed,

torpedo sand; small crushed stone that will pass through a 1 inch mesh screen; crushed cinders that will pass through a 1} inch mesh screen; waste anular i -iron of the kind that flakes o 0' p51 p maiter they have molde m' e ioun ry and have been handled in storing or shipping; and any ordinary form of cement purchasable in the open market. The form of pig-iron used is 'a waste by-product resulting in large quantities from the handling of pig-iron and readily obtainable at very low cost from smelters. After mixing these dry ingredients with suflicient water to dampen them without making a liquid of the mass, I subject the mixture, within a suitable mold, to a pressure of not less than 40 tons.

copies of this patent my be obtained for Upon removal from flhe mold brick formed of this mixture harden with exceeding rapidity, rendering them available for use almost immediately upon their removal from the mold.

In explanation of the term torpedo sand it is here stated that this is a rm I monly used by architects, contractors and others working in the art of concrete construction to designate generally coarse, sharp sand. More particularly the term signifies fine particles of stone (especially Patented Sept. 30, 1919.

Application filed Apri14, 1919. Serial No. 287,578.

silicious stone) in loose state but not reduced to powder or dust; a collection of silicious granules not coherent when wet.

The exact proportions and sizing of the above-named ingredients may be somewhat altered without departing materially from the quick-drying and antl-crushing advantages which I obtain.

I claim:

1. A composition of matter for the manufacture of building brick, comprising sand crushed storg, screened cinders granular ifin, anYF cement.

2. A composltlon of matter for the manufacture of building brick, comprising torpedo' sand, crushed stone which will pass through a 1 inch mesh screen, crushed cinders which will pass through a inch mesh screen, granulated waste of pig-iron and cement.

3. A com osition of matter for the manufacture of u'ilding brick, comprising 10% of torpedo sand, 10% of finely crushed stone, 5% of fine crushed cinders, 5% of granular waste of pig-iron, and 70% of cement.

4. A composition of matter for the manufacture of building brick, comprising 10% of torpedo sand, 10% of fine crush stone, 5% of fine crushed cinders, 5% of granular waste of pig-iron, 70% of cement; and water in suflicient quantity to thoroughly moisten said ingredients and leave the resulting mass non-liquid.

In testimony whereof I have aflixed my signature.

i LEO HALPER.

five cents each, by addressing the "Commissioner of Patents, Wuhiugton, D. 0. 

